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American Focus > Blog > Tech and Science > The Oldest Evidence of Psychedelics in The Andes Predates The Inca : ScienceAlert
Tech and Science

The Oldest Evidence of Psychedelics in The Andes Predates The Inca : ScienceAlert

Last updated: May 11, 2025 6:50 am
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The Oldest Evidence of Psychedelics in The Andes Predates The Inca : ScienceAlert
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Uncovering the Ancient Use of Psychedelics in the Peruvian Andes

In the Peruvian Andes, thousands of years ago, the Chavín culture was engaged in the consumption of psychoactive drugs as part of their rituals and ceremonies. Recently, archaeologists have discovered direct chemical evidence of this practice, shedding light on the earliest known human use of psychoactive substances in the region.

The artifacts used for consuming these drugs, such as bone tubes, were found in private chambers that only a select few could access. This suggests that the use of psychoactive substances was reserved for the cultural elite, reinforcing social hierarchy within the Chavín society.

The Oldest Use of Known Psychedelics in The Andes Predates The Inca
An illustration of the chamber in use. (University of Florida)

According to anthropological archaeologist Daniel Contreras from the University of Florida, the use of psychoactives among the Chavín was not solely for hallucinogenic experiences but was intricately tied to their rituals and belief systems.

Recent excavations at the ancient ceremonial site of Chavín de Huántar yielded 23 artifacts, including bone tubes, which were analyzed to identify traces of psychoactive substances. The presence of wild tobacco and vilca on these artifacts indicated the use of substances with hallucinogenic properties.

The Oldest Use of Known Psychedelics in The Andes Predates The Inca
This broken spoon was one of the bone artifacts. (Rick et al., PNAS, 2025)

The meticulous preparation of these substances, as indicated by the damage to starch grains on the artifacts, highlights the significance of psychoactive rituals in the Chavín culture. The restricted access to the chambers where these activities took place underscores the exclusivity and importance of these ceremonies.

The Oldest Use of Known Psychedelics in The Andes Predates The Inca
The tiny room in which the artifacts were found. (Rick et al., PNAS, 2025)

This discovery not only provides insight into the ancient practices of the Chavín culture but also helps us understand the societal dynamics and transitions that occurred in the region over millennia. The use of psychoactive substances in rituals served to reinforce belief systems and social structures, contributing to the development of hierarchical societies.

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As we reflect on these ancient practices, it is evident that the cultural significance of psychoactive substances has evolved over time. While modern perspectives may view such practices differently, the archaeological evidence from the Peruvian Andes offers a glimpse into the rich history of human engagement with mind-altering substances.

The research findings have been published in PNAS, providing a valuable contribution to our understanding of ancient civilizations and their complex belief systems.

TAGGED:AndesEvidenceIncaOldestPredatesPsychedelicsScienceAlert
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